June 19, 2025An IgG blood test measures immunoglobulin G, the most common antibody in your blood and the main carrier of your…
June 19, 2025An IgA blood test measures immunoglobulin A, the most abundant antibody guarding the moist linings of your gut, airways, and…
June 19, 2025A procalcitonin test measures a protein in your blood, called procalcitonin (PCT), that climbs quickly when your body fights a…
June 19, 2025An ESR blood test, short for erythrocyte sedimentation rate, is one of the oldest and most widely ordered laboratory tests…
June 19, 2025A CRP blood test measures C-reactive protein, a substance your liver releases into the bloodstream whenever there is inflammation somewhere…
June 19, 2025An IgM blood test measures immunoglobulin M, the first antibody your immune system produces when it meets a new germ.…
June 19, 2025An estradiol blood test measures how much estradiol — often written as E2 — is circulating in your blood. Estradiol…
June 19, 2025An ACTH blood test measures adrenocorticotropic hormone, a chemical messenger made by your pituitary gland that tells your adrenal glands…
June 19, 2025A calcitonin blood test measures a hormone made by specialized cells in your thyroid gland, and it often appears on…
June 19, 2025An IGFBP-3 blood test measures insulin-like growth factor binding protein 3, the main carrier protein for a growth factor called…